pseudo-code to illustrate what coroutineScope

// This is pseudo-code for purposes of understanding !!NOT TO BE USED AS IS!!
suspend fun <T> coroutineScope(block: suspend CoroutineScope.() -> T): T {
    // Get the current coroutine context
    val currentContext = coroutineContext
    
    // Create a new Job that's a child of the current job
    val scopeJob = Job(parent = currentContext[Job])
    
    // Create a new scope with the new job
    val scope = CoroutineScope(currentContext + scopeJob)
    
    try {
        // Execute the block and get result
        val result = block(scope)
        
        // This conceptually "waits" for all children to complete
        // (In reality this would need to be done differently)
        scopeJob.complete()  // Signal no more children will be added
        scopeJob.join()      // Wait for existing children
        
        return result
    } catch (e: Exception) {
        // Cancel all children on any exception
        scopeJob.cancelChildren()
        throw e
    }
}

---

Backlinks

• coroutineScope (Function)